CN104284494A - Photovoltaic LED direct-current power supply control system - Google Patents
Photovoltaic LED direct-current power supply control system Download PDFInfo
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- CN104284494A CN104284494A CN201410573112.6A CN201410573112A CN104284494A CN 104284494 A CN104284494 A CN 104284494A CN 201410573112 A CN201410573112 A CN 201410573112A CN 104284494 A CN104284494 A CN 104284494A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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Abstract
The invention discloses a photovoltaic LED direct-current power supply control system which comprises a photovoltaic array, a controller, an energy storage battery, a drive control module, an LED load, a grid-connected inverter and a public supply network. The controller is connected with the photovoltaic array and used for carrying out voltage conversion on direct currents output by the photovoltaic array to charge the energy storage battery and detecting the electric quantity of the energy storage battery. After the electric quantity of the energy storage battery is saturated, redundant electric energy is input to the grid-connected inverter by the photovoltaic array. The drive control module is connected with the energy storage battery and used for carrying out voltage conversion on output voltages output by the energy storage battery to supply power to the LED load. The grid-connected inverter is connected with the photovoltaic array and the public supply network and used for carrying out contravariant conversion on the redundant electric energy output by the photovoltaic array to form alternating currents to be conveyed to the public supply network. Direct-current direct supply is really achieved, conversion links are reduced, the effects of environmental protection and energy saving are achieved, and meanwhile the functions of peak regulation and the like are achieved.
Description
Technical field
The present invention relates to technical field of LED illumination, particularly a kind of photovoltaic LED direct current supply control system.
Background technology
Energy-conserving and environment-protective are themes of the times that current generation is advocated, and are current problem demanding prompt solutions for the utilization of new energy resources problem that energy-conserving and environment-protective theme proposes.New forms of energy (NE), also known as unconventional energy resource, refer to the various energy forms outside traditional energy.Such as solar energy, geothermal energy, wind energy, oceanic energy, biomass energy and nuclear fusion energy etc.In addition, new type light source is also one of main behave of energy-conserving and environment-protective, the LED light source that such as people know, features such as efficiency is high because having, life-span length, energy-conserving and environment-protective and being applied widely, is about to the main stream light sources becoming illumination of future generation.
But, current LED illumination is mainly based on mains-supplied, civil power by step-down, after rectification for driving LED light fixture, mainly contain following problem: (1) civil power is alternating current, and LED lamp is DC load, this just needs civil power could supply LED lamp through a series of conversion, and this process link is many, efficiency is low and easily break down; (2) civil power is converted into the power supply providing LED lamp, because the fluctuation of line voltage causes the change of LED operating voltage, thus can cause the change of drive current, current precision is very low, will reduce the superior function of LED, reduction of service life.
Summary of the invention
The present invention is intended to one of technical problem at least solving the existence of above-mentioned prior art.
For this reason, the object of the present invention is to provide a kind of photovoltaic LED direct current supply control system, this control system realizes direct current direct-furnish, reduces conversion links, reaches environmental protection, energy-conservation effect etc.
For achieving the above object, photovoltaic LED direct current supply control system provided by the invention, comprises photovoltaic array, controller, energy-storage battery, drive control module, LED load, combining inverter and public electric wire net;
Described photovoltaic array is used for solar energy to be converted to direct current;
Described controller is connected with described photovoltaic array, and it is the charging of described energy-storage battery that the direct current for exporting described photovoltaic array carries out voltage transitions formation charging voltage; And detect the electricity of described energy-storage battery, after the electricity of described energy-storage battery is saturated, unnecessary electric energy is inputed to described combining inverter by described photovoltaic array;
Described drive control module is connected with described energy-storage battery, and it is that described LED load is powered that the output voltage for being exported by described energy-storage battery carries out voltage transitions formation LED driving voltage;
Described combining inverter is connected with described photovoltaic array and public electric wire net, and the unnecessary electric energy for being exported by described photovoltaic array carries out inversion conversion formation alternating current and is delivered to public electric wire net.
Preferably, also comprise two-way inverter, described two-way inverter is connected between described energy-storage battery and public electric wire net, and it is the charging of described energy-storage battery that the output voltage for being exported by described public electric wire net carries out voltage transitions formation charging voltage; Or the direct voltage that described energy-storage battery exports is converted to alternating current and is delivered to public electric wire net.
Preferably, described combining inverter is also for detecting frequency and the amplitude of described public electric wire net, and when described frequency and amplitude are greater than set point, described combining inverter auto-breaking is to quit work.
Preferably, between described combining inverter and described public electric wire net, be connected with unidirectional electric energy table, in order to record the energy data that described photovoltaic array is carried to described public electric wire net.
Preferably, between described two-way inverter and described public electric wire net, be connected with bidirectional power meter, for recording energy data that described energy-storage battery carries to described public electric wire net and the energy data that described public electric wire net provides to described energy-storage battery.
Preferably, also comprise remote monitoring terminal, described remote monitoring terminal is connected with described controller, combining inverter, two-way inverter radio communication, for receiving described controller, related data that combining inverter, two-way inverter are uploaded carry out control and management to described controller, combining inverter, two-way inverter according to described related data.
According to photovoltaic LED direct current supply control system provided by the invention, charged to energy-storage battery by photovoltaic array, then provide galvanic current energy by energy-storage battery to LED load, really realize direct current direct-furnish, reduce conversion links, reach environmental protection, energy-conservation effect.Simultaneously, photovoltaic array, energy-storage battery, combining inverter, two-way inverter and public electric wire net is adopted to form an energy resource system, the energy balance of energy-storage battery charging and discharging can be maintained, ensure energy-storage battery voltage stabilization, thus give security for the control of the high accuracy drive current of LED.In addition, the energy resource system that photovoltaic array, energy-storage battery, combining inverter, two-way inverter and public electric wire net form, also there is peak regulating function, the public electric wire net paddy electricity time in night is utilized to charge to energy-storage battery, and by day peak of power consumption time to public electric wire net transmission of electric energy, alleviation Voltage force to a certain extent.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the invention photovoltaic LED direct current supply control system;
Fig. 2 is the structural representation of another embodiment of the present invention photovoltaic LED direct current supply control system;
Fig. 3 is the structural representation of further embodiment of this invention photovoltaic LED direct current supply control system.
Reference numeral:
10: photovoltaic array;
20: controller;
30: combining inverter;
40: energy-storage battery;
50: public electric wire net;
60: drive control module;
70:LED load;
80: two-way inverter;
90: unidirectional electric energy table;
100: bidirectional power meter.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
With reference to shown in Fig. 1, embodiments provide a kind of photovoltaic LED direct current supply control system, comprise photovoltaic array 10, controller 20, energy-storage battery 40, drive control module 60, LED load 70, combining inverter 30 and public electric wire net 50.
Concrete, photovoltaic array 10 is for being converted to direct current by solar energy.That is, the present invention's electric energy of utilizing solar energy to change is as the energy source of system.This photovoltaic array 10 can adopt photovoltaic array.
Controller 20 is connected with photovoltaic array 10, and it is that described energy-storage battery 40 charges that the direct current for exporting photovoltaic array 10 carries out voltage transitions formation charging voltage; And detect the electricity of described energy-storage battery 40, after the electricity of described energy-storage battery 40 is saturated, unnecessary electric energy is inputed to described combining inverter 30 by described photovoltaic array 10.
In the present embodiment, controller 20 has maximum power tracing function, can ensure the work of photovoltaic array 10 round-the-clock, round-the-clock maximal efficiency.General, because the solar illuminating in situation is by day sufficient, so energy-storage battery 40 can charge saturated within a certain period of time, and the electric energy that photovoltaic array 10 continues conversion generation is unnecessary electric energy, and the unnecessary electric energy of this part can input to combining inverter 30.
Drive control module 60 is connected with described energy-storage battery 40, and it is that described LED load 70 is powered that the output voltage for being exported by described energy-storage battery 40 carries out voltage transitions formation LED driving voltage.
Combining inverter 30 is connected with photovoltaic array 10 and public electric wire net 50, and the unnecessary electric energy for being exported by photovoltaic array 10 carries out inversion conversion formation alternating current and is delivered to public electric wire net 50.That is, after energy-storage battery 40 is full of electricity, the unnecessary electric energy that photovoltaic array 10 produces, inversion conversion can be carried out by combining inverter 30, the unnecessary electric energy of direct current is converted to and the alternating current of public electric wire net 50 with frequency homophase, and be delivered to public electric wire net 50 with the form of current source, so, realize making full use of solar energy.
According to the photovoltaic LED direct current supply control system that the embodiment of the present invention provides, charged to energy-storage battery 40 by photovoltaic array 10, then provide galvanic current energy to LED load 70 by energy-storage battery 40, really realize direct current direct-furnish, reduce conversion links, reach environmental protection, energy-conservation effect.Simultaneously, unnecessary electric energy inputs to public electric wire net 50 after can being changed by combining inverter 30 again, so, solar energy can be made full use of, also alleviate public electric wire net 50 Voltage force, especially by day, general daytime is peak of power consumption, by by unnecessary power delivery to public electric wire net 50, can alleviate and use Voltage force.
With reference to shown in Fig. 2, in another embodiment of the present invention, the present invention also comprises two-way inverter 80, and this two-way inverter 80 is connected between energy-storage battery 40 and public electric wire net 50.For when meeting first and imposing a condition, it is that energy-storage battery 40 charges that the output voltage exported by public electric wire net 50 carries out voltage transitions formation charging voltage; And when meeting second and imposing a condition, the direct voltage that described energy-storage battery 40 exports is converted to alternating current and is delivered to public electric wire net 50.That is, two-way inverter 80 according to specific needs, both the alternating current that public electric wire net 50 exports can be converted to the charging voltage matched with energy-storage battery 40 and be that energy-storage battery 40 charges, also the direct current that energy-storage battery 40 exports can be converted to public electric wire net 50 with the alternating current of homophase is frequently that public electric wire net 50 is powered.Such as, energy-storage battery 40 electricity is not enough, and when being in rainy weather, can be charged by public electric wire net 50 to energy-storage battery 40.Daytime, photovoltaic array 10 power output was large and energy-storage battery 40 energy storage is sufficient, can export electric energy like this, the pressure of alleviation electrical network according to scheduling to public electric wire net 50.
In addition, in evening hours section (such as 19:00-next day 7:00) and the electricity of energy-storage battery 40 lower than set point time, that is, in evening hours section, because this time period is not peak times of power consumption, simultaneously, LED load 70 constantly consumes the electric energy of energy-storage battery 40, so, at this moment in section, as long as when the electricity of energy-storage battery 40 is too low, namely lower than set point, then can be charged for energy-storage battery 40 by public electric wire net 50, to keep energy-storage battery 40, there is the electricity enough providing LED load 70 to use.
And when time period (such as 7:00-19:00) and the output voltage of public electric wire net 50 are lower than set point by day, that is, time period by day, because this time period is peak times of power consumption, the output voltage of public electric wire net 50 drags down, the need for electricity in certain area can not be met, and LED load 70 stage by day now, generally do not enable, therefore, there is in energy-storage battery 40 sufficient electric energy, so, at this moment in section, as long as when the output voltage of public electric wire net 50 is too low, namely lower than set point, then can be charged for public electric wire net 50 by energy-storage battery 40, to improve the load capacity of public electric wire net 50, what alleviate peak times of power consumption uses Voltage force.
In other words, in the present embodiment, photovoltaic array 10, energy-storage battery 40, combining inverter 30, two-way inverter 80 and public electric wire net 50 form an energy resource system, the energy balance of energy-storage battery 40 charging and discharging can be maintained, ensure energy-storage battery 40 voltage stabilization, thus give security for the control of the high accuracy drive current of LED.In addition, the energy resource system of photovoltaic array 10, energy-storage battery 40, combining inverter 30, two-way inverter 80 and public electric wire net 50 composition, also there is peak regulating function, the public electric wire net 50 paddy electricity time in night is utilized to charge to energy-storage battery 40, and by day peak of power consumption time to public electric wire net 50 transmission of electric energy, alleviation Voltage force to a certain extent.
In one particular embodiment of the present invention, combining inverter 30 is also for detecting frequency and the amplitude of public electric wire net 50, and when described frequency and amplitude are greater than set point, described combining inverter 30 auto-breaking is to quit work.That is, when the electric voltage frequency of public electric wire net 50 and amplitude fluctuations larger time, then think public electric wire net 50 fault, combining inverter 30 auto-breaking quits work, so, can each part in available protecting system.
With reference to shown in Fig. 3, in the another embodiment of invention, be connected with unidirectional electric energy table between combining inverter 30 and public electric wire net 50, the energy data carried to described public electric wire net 50 in order to recording light photovoltaic array 10.Namely, the data of the unnecessary electricity that photovoltaic array 10 produces can be checked by this unidirectional electric energy table 90.
Bidirectional power meter 100 is connected with, for recording energy data that described energy-storage battery 40 carries to described public electric wire net 50 and the energy data that described public electric wire net 50 provides to described energy-storage battery 40 between two-way inverter 80 and public electric wire net 50.Namely, the data of the electric energy that the data of the electric energy that energy-storage battery 40 provides for public electric wire net 50 and public electric wire net 50 provide for energy-storage battery 40 can be checked by this two-phase electric energy meter.
In yet another embodiment of the present invention, the present invention also comprises remote monitoring terminal, this remote monitoring terminal is connected with controller 20, combining inverter 30, two-way inverter 80 radio communication, for receiving described controller 20, related data that combining inverter 30, two-way inverter 80 are uploaded carry out control and management to described controller 20, combining inverter 30, two-way inverter 80 according to described related data.So, the data of self and state information etc. can be uploaded to remote monitoring terminal, so that remote monitoring terminal carries out concentrated controling management by controller 20, combining inverter 30, two-way inverter 80.
Certainly, this remote monitoring terminal also can communicate to connect with unidirectional electric energy table 90 in above-described embodiment and bidirectional power meter 100, the energy data that unidirectional electric energy table 90 and bidirectional power meter 100 can record is uploaded to remote monitoring terminal, so that understand the data of the unnecessary electricity that photovoltaic array 10 produces in real time, data of the electric energy that the data of the electric energy that energy-storage battery 40 provides for public electric wire net 50 and public electric wire net 50 provide for energy-storage battery 40 etc.
In sum, photovoltaic LED direct current supply control system provided by the invention, is charged to energy-storage battery 40 by photovoltaic array 10, there is provided galvanic current energy to LED load 70 by energy-storage battery 40 again, really realize direct current direct-furnish, reduce conversion links, reach environmental protection, energy-conservation effect.Simultaneously, photovoltaic array 10, energy-storage battery 40, combining inverter 30, two-way inverter 80 and public electric wire net 50 is adopted to form an energy resource system, the energy balance of energy-storage battery 40 charging and discharging can be maintained, ensure energy-storage battery 40 voltage stabilization, thus give security for the control of the high accuracy drive current of LED.In addition, the energy resource system of photovoltaic array 10, energy-storage battery 40, combining inverter 30, two-way inverter 80 and public electric wire net 50 composition, also there is peak regulating function, the public electric wire net 50 paddy electricity time in night is utilized to charge to energy-storage battery 40, and by day peak of power consumption time to public electric wire net 50 transmission of electric energy, alleviation Voltage force to a certain extent.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, those of ordinary skill in the art can change above-described embodiment within the scope of the invention when not departing from principle of the present invention and aim, revising, replacing and modification.
Claims (6)
1. a photovoltaic LED direct current supply control system, is characterized in that, comprises photovoltaic array, controller, energy-storage battery, drive control module, LED load, combining inverter and public electric wire net;
Described photovoltaic array is used for solar energy to be converted to direct current;
Described controller is connected with described photovoltaic array, it is the charging of described energy-storage battery that direct current for exporting described photovoltaic array carries out voltage transitions formation charging voltage, and detect the electricity of described energy-storage battery, after the electricity of described energy-storage battery is saturated, unnecessary electric energy is inputed to described combining inverter by described photovoltaic array;
Described drive control module is connected with described energy-storage battery, and it is that described LED load is powered that the output voltage for being exported by described energy-storage battery carries out voltage transitions formation LED driving voltage;
Described combining inverter is connected with described photovoltaic array and public electric wire net, and the unnecessary electric energy for being exported by described photovoltaic array carries out inversion conversion formation alternating current and is delivered to public electric wire net.
2. photovoltaic LED direct current supply control system according to claim 1, it is characterized in that, also comprise two-way inverter, described two-way inverter is connected between described energy-storage battery and public electric wire net, output voltage for being exported by described public electric wire net carries out voltage transitions, and to form charging voltage be the charging of described energy-storage battery, or the direct voltage that described energy-storage battery exports is converted to alternating current is delivered to public electric wire net.
3. photovoltaic LED direct current supply control system according to claim 1, it is characterized in that: described combining inverter is also for detecting frequency and the amplitude of described public electric wire net, when described frequency and amplitude are greater than set point, described combining inverter auto-breaking is to quit work.
4. photovoltaic LED direct current supply control system according to claim 1, is characterized in that, be connected with unidirectional electric energy table between described combining inverter and described public electric wire net, in order to record the energy data that described photovoltaic array is carried to described public electric wire net.
5. photovoltaic LED direct current supply control system according to claim 2, it is characterized in that, bidirectional power meter is connected with, for recording energy data that described energy-storage battery carries to described public electric wire net and the energy data that described public electric wire net provides to described energy-storage battery between described two-way inverter and described public electric wire net.
6. photovoltaic LED direct current supply control system according to any one of claim 1 to 5, it is characterized in that: also comprise remote monitoring terminal, described remote monitoring terminal is connected with described controller, combining inverter, two-way inverter radio communication, for receiving described controller, related data that combining inverter, two-way inverter are uploaded carry out control and management to described controller, combining inverter, two-way inverter according to described related data.
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| CN107040034A (en) * | 2016-02-03 | 2017-08-11 | 珠海格力电器股份有限公司 | Photovoltaic energy storage air conditioning device and control method |
| CN109038780A (en) * | 2018-06-29 | 2018-12-18 | 华为技术有限公司 | A kind of photovoltaic system |
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Application publication date: 20150114 |